The new flue gas Analyser testo 350 offers advantages and real benefits
– as you can see!

Analyser box – industrial standard, robust and reliable :

In the Analyser box are the gas sensors, the measurement gas and rinsing pumps, the Peltier gas preparation (optional), gas paths, filters, analysis and storage electronics as well as the mains unit and the Li-ion battery.

The robust housing has built-in impact protection (specially constructed X-shaped rubber edges), allowing the Analyser box to be used in tough conditions. Downtimes due to dirt in the instrument are almost completely eliminated by intelligent design and robustness. Inherently sealed chambers protect the interior of the instrument from dirt from the surroundings. Operation can be carried out with the control unit or in derict connection with a PC or notebook (USB, Bluetooth® 2.0 or CANCase). The Analyser box can, after programming, independently carry out measurements and store measurement data.

The plug-in connections for the probes and bus cables are locked by bayonet fittings, and therefore securely connected to the Analyser box. This prevents unintentional removal, avoiding false measurements.

The advantages of the Analyser box:

Special chambers offer comprehensive protection for the sensors and electronics from dust and deposits.

Control unit – small and convenient

The control unit is the operating and display unit of the testo 350. It can be removed and equipped as standard with a Li-ion rechareable battery.

All settings are carried out using the cursor button. The presentation of the measurement values takes place via the colour graphic display. Thanks to the internal memory, measurement data can be transferred from the Analyser box to the control unit. If required by the measurement, several Analyser boxes can conveniently be operated and controlled using one control unit

The advantages of the testo 350 control unit :

Operation of the Analyser box and transfer of the measurement data even when the flue gas pipe and the adjustment site are separated, especiall helpful for industrial burners, for example.

Measurement data can be transferred from the Analyser box to the control unit. This means the Analyser box can remain at the measurement site for further measurements, and the control unit taken away in order to process the measurement data.

In order to protect the display in measurements over a longer period or during transport to different measurement sites in a system, the control unit can be attached to the Analyser box face-down.

The service opening in the underside of the instrument allows very easy access to all relevant service and wearing parts such as pumps and filters, which can then be quickly cleaned and/or exchanged on site.

The advantages:

Reduction of instrument unavailability due to service times.

Cost savings due to instrument maintenance and/or exchange and cleaning of wearing parts by the user.

Immediate access to all relevant wearing parts

Thermally separated sensor chamber

The sensor chamber is thermally separated from the other instrument components. This reduces possible sensr drifts caused by thermal influences.

This allows the maximum reliability pf the measuring instrument to be achieved.

Easy exchange of the gas sensors

The gas sensors are pre-calibrated and can be exchanged, replaced or extended by further measurement parameters without test gas – if necessary directly on site.

The advantages:

No more long service times

Flexible extension of the testo 350 by further gas measurement parameters when applications or regulations change.

A report is immediately issued when the NO sensor filter is used up. Then only the filter needs to be changed, and no longer the whole NO sensor.

Automatically monitored condensate trap

The automatic monitoring of filling level reports when the condensate trap needs to be emptied, and a few minutes after the report, the measurement gas pump is automatically stopped. This provides the highest protection of the Analyser box and the gas sensors from damage by condensate entry.

External cooling loop

Closed cooling loops isolate the instrument electronics and sensors from the ambient air. The interior of the instrument is cooled via a heat exchanger and therefore does not come into contact with dirty or aggressive ambient air.

Helpful instrument pre-settings save time
Typical fuels, a practicable order of the exhaust gas parameters in the display as well as useful instrument pre-settings are stored under each application (selection list in display. Information in the display guides the user through the menu, previous familiarity with the instrument is not necessary. The testo 350 is ready for use after only a few minutes.

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Unrestricted measurement at high concentrations
When commissioning burners and in measurements on unfamiliar systems, very high concnetrations can take the user by surprise. In these cases, the automatic measuring range extension is activated.

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High availability even under difficult conditions
The instrument diagnosis as well as warning reports in clear text inform the user of the current status of the flue gas analyzer. The large service opening in the testo 350 provides easy access to all relevant wearing parts such as sensors, filters and pumps. This means they can be quickly and easily cleaned or exchanged on site. The pre-calibrated sensors allow the exchange of sensors without test gas.

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Highmeasurement accuracy even in unsupervisedmeasurements
The integrated gas preparation prevents condensate from entering the measuring instrument and damaging it. Condensate which occurs is automatically pumped off by a peristaltic pump. In addition to this, the gas preparation and the PTFE hose in the gas sampling probe avoid NO 2 and SO 2 absorbtion 0 this makes highly accurate measurements possible.

Advantages in emission measurement on gas turbines

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Easy, precise test gas adjustment by the user

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Use under tough conditions

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Highly accurate NOx measurements at low concentrations

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Combination of measuring range extension and COlow sensor

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Easy, precise test gas adjustment by the user
In order to fulfil the highest accuracy and comparability requirements, the testo 350 can, if needed, be adjusted using test gas on site.

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Use under ,,tough'' conditions
Special chambers and closed cooling loops isolate the instrument electronics and sensors from the ambient air. This means the sensor chamber is thermally separated from the other instrument components, and possible drift of the sensors due to thermal influences are reduced.

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Highly accurate NOx measurements at low concentrations
Emission measurement during monitoring and adjustment work on Low- NOx gas turbines requires a very high level of measurement accuracy because of the low NO concentrations. Thanks to the combination of the NO 2 sensor and the special NOlow sensor with a resolution of 0.1 ppm, exactly these requirements are fulfilled. In addition to this, the integrated gas preparation and the special exhaust gas probe for industrial engines with a special hose provides protection from NO2 absorbtion.

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Combination of measuring range extension and COlow sensor
Thanks to the freely selectable dilution levels, concentrations of up to a maximum of 20,000 ppm can also be measured without any problems with the COlow sensor (measuring range 500 ppm).

Advantages in emission measurement on industrial engines

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Special instrument menu for the testing of exhaust gas preparation systems

Special instrument menu for the testing of exhaust gas preparation systems
This exhaust gas menu allows the simultaneous measurement of exhaust gas concentrations before and after the catalytic converter. For this purpose, two analyzer boxes are connected to each other with the Testo databus cable. The measurement values of the two analyzer boxes are shown parallel to each other in the control unit's display, enabling a fast overview of the status of the converter.

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Spatial distances
For greater distances between the gas sampling site and the adjustnment site, the control unit can be connected with the analyzer box either via the Testo databus cable or by Bluetooth® 2.0.

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Highly accurate NOx measurement
The testo 350 allows the separate measurement of NO and NO 2. The high and fluctuating NO 2 components in engine exhaust gas make this measurement necessary, in order to display the real NOx value of the engine. In addition to this, the integrated gas preparation and the exhaust gas probe with a special hose provide protection from NO 2 and SO 2 absorbtion.

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Automatic measurement range enxtension for unexpectedly high CO concentrations
In measurements on unfamiliar systems, or under less than ideal operating conditions, unexpectedly high emission values (e.g. CO concentrations up to 50,000 ppm) can occur. In these cases, the measurement range extension is automatically activated. This means maximum sensor life. These useful pre-settings are already stored application-specifically in the instrument – the testo 350 thinks ahead!

Advantages in emissionmeasurement in thermal processes

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Excellently suited to long-term measurements

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Simultaneous exhaust gas analysis at different measuremnt sites

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Ideal for measurements at high concentrations

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Industrial standard instrument functions for more security

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Excellently suited to long-term measurements
Controlled by defined measurement procedures, processes/furnace cycles can be monitored and analyzed over several days. The testo 350 conducts the measurements and saves the data in its internal store. The control can also be carried out directly via a PC and the easyEmission software.

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Simultaneous exhaust gas analysis at different measuremnt sites
In order to create a simultaneous profile of the furnace atmosphere and the combustion zones in large systems, up to 16 analyzer boxes can be connected with each other into a measurement system using the Testo databus cable. The control and operation can be carried out optionally either via the control unit or directly via a PC/notebook.

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Ideal for measurements at high concentrations
Especially when recording extreme concentrations up to the % range, the measuring range extension is automatically activated. This allows the continuation of the measurement. The gas sensor is placed under no greater load than at low concentrations, a maximum sensor life is achieved – without additional costs for further gas sensors.

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Industrial standard instrument functions for more security
Inherently closed cooling loops isolate the instrument's electronics and sensor from the ambinet air. This means using the testo 350 in dusty or dirty surroundings is no problem. The impact protection integrated into the housing protects the testo 350 from knocks and jars on the way to the measurement site.